Injinji Toeless Yoga Socks Nubamboo Fabric Natural Antibacterial Fabric-Non Slip Bottom (Small, Black & Gray Stripe) Lightweight, silky smooth and eco-conscious NuBamboo fabric Moisture-wicking and quick-drying properties Lycra spandex offers stretch and shape retention Proudly carries the Seal of Acceptance from the American Podiatric Medical Association Bottom of socks feature a slip-resistant pattern of raised, non-toxic rubber dots for superior grip and control